1254172572 has 144 divisors (see below), whose sum is σ = 3459327872. Its totient is φ = 396809280.

The previous prime is 1254172567. The next prime is 1254172597. The reversal of 1254172572 is 2752714521.

1254172572 is a `hidden beast` number, since 12 + 5 + 4 + 1 + 72 + 572 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1546047 + ... + 1546857.

Almost surely, 2^1254172572 is an apocalyptic number.

1254172572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1254172572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1729663936).

1254172572 is an abundant number, since it is smaller than the sum of its proper divisors (2205155300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1254172572 is a wasteful number, since it uses less digits than its factorization.

1254172572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 896 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 1254172572 is about 35414.2989765434. The cubic root of 1254172572 is about 1078.4146183285.

The spelling of 1254172572 in words is "one billion, two hundred fifty-four million, one hundred seventy-two thousand, five hundred seventy-two".