137566523925 has 72 divisors (see below), whose sum is σ = 250133240448. Its totient is φ = 72258480000.

The previous prime is 137566523921. The next prime is 137566523959. The reversal of 137566523925 is 529325665731.

137566523925 is a `hidden beast` number, since 1 + 3 + 7 + 566 + 52 + 3 + 9 + 25 = 666.

It is not a de Polignac number, because 137566523925 - 2² = 137566523921 is a prime.

It is a super-4 number, since 4×137566523925⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137566523921) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16977375 + ... + 16985475.

It is an arithmetic number, because the mean of its divisors is an integer number (3474072784).

Almost surely, 2^137566523925 is an apocalyptic number.

137566523925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137566523925 is a deficient number, since it is larger than the sum of its proper divisors (112566716523).

137566523925 is a wasteful number, since it uses less digits than its factorization.

137566523925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9251 (or 9243 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 54.

The spelling of 137566523925 in words is "one hundred thirty-seven billion, five hundred sixty-six million, five hundred twenty-three thousand, nine hundred twenty-five".