125733721490 has 16 divisors (see below), whose sum is σ = 243729983448. Its totient is φ = 46424758656.

The previous prime is 125733721439. The next prime is 125733721523. The reversal of 125733721490 is 94127337521.

It can be written as a sum of positive squares in 4 ways, for example, as 101720809969 + 24012911521 = 318937^2 + 154961^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483591107 + ... + 483591366.

Almost surely, 2^125733721490 is an apocalyptic number.

125733721490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125733721490 is a deficient number, since it is larger than the sum of its proper divisors (117996261958).

125733721490 is a wasteful number, since it uses less digits than its factorization.

125733721490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967182493.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 125733721490 in words is "one hundred twenty-five billion, seven hundred thirty-three million, seven hundred twenty-one thousand, four hundred ninety".