137525690 has 16 divisors (see below), whose sum is σ = 248071680. Its totient is φ = 54893520.

The previous prime is 137525657. The next prime is 137525701. The reversal of 137525690 is 96525731.

It is a happy number.

137525690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×137525690² = 37826630819952200, which contains 22 as substring.

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, 9566 + ... + 19145.

It is an arithmetic number, because the mean of its divisors is an integer number (15504480).

Almost surely, 2^137525690 is an apocalyptic number.

137525690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137525690 is a deficient number, since it is larger than the sum of its proper divisors (110545990).

137525690 is a wasteful number, since it uses less digits than its factorization.

137525690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29197.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 137525690 is about 11727.1347736777. The cubic root of 137525690 is about 516.1722003036.

The spelling of 137525690 in words is "one hundred thirty-seven million, five hundred twenty-five thousand, six hundred ninety".