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72974377725 = 3521567962057
BaseRepresentation
bin100001111110110011…
…1001010001011111101
320222100201011111001120
41003331213022023331
52143422420041400
653305102101153
75162241655554
oct1037547121375
9228321144046
1072974377725
1128a48152087
1212186b7a7b9
136b5c72a682
143763a6cd9b
151d717e2ca0
hex10fd9ca2fd

72974377725 has 24 divisors (see below), whose sum is σ = 120660610560. Its totient is φ = 38916558720.

The previous prime is 72974377643. The next prime is 72974377741. The reversal of 72974377725 is 52777347927.

It is not a de Polignac number, because 72974377725 - 212 = 72974373629 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1144897 + ... + 1206953.

It is an arithmetic number, because the mean of its divisors is an integer number (5027525440).

Almost surely, 272974377725 is an apocalyptic number.

72974377725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72974377725 is a deficient number, since it is larger than the sum of its proper divisors (47686232835).

72974377725 is a wasteful number, since it uses less digits than its factorization.

72974377725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77749 (or 77744 counting only the distinct ones).

The product of its digits is 36303120, while the sum is 60.

The spelling of 72974377725 in words is "seventy-two billion, nine hundred seventy-four million, three hundred seventy-seven thousand, seven hundred twenty-five".

Divisors: 1 3 5 15 25 75 15679 47037 62057 78395 186171 235185 310285 391975 930855 1175925 1551425 4654275 972991703 2918975109 4864958515 14594875545 24324792575 72974377725