40136725 has 36 divisors (see below), whose sum is σ = 54434016. Its totient is φ = 29296960.

The previous prime is 40136713. The next prime is 40136773. The reversal of 40136725 is 52763104.

40136725 = 271² + 272² + ... + 519².

It is not a de Polignac number, because 40136725 - 2²³ = 31748117 is a prime.

It is a super-2 number, since 2×40136725² = 3221913387451250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40136693 and 40136702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 483534 + ... + 483616.

It is an arithmetic number, because the mean of its divisors is an integer number (1512056).

Almost surely, 2^40136725 is an apocalyptic number.

It is an amenable number.

40136725 is a deficient number, since it is larger than the sum of its proper divisors (14297291).

40136725 is a wasteful number, since it uses less digits than its factorization.

40136725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 40136725 is about 6335.3551597365. The cubic root of 40136725 is about 342.3844069756.

Adding to 40136725 its reverse (52763104), we get a palindrome (92899829).

The spelling of 40136725 in words is "forty million, one hundred thirty-six thousand, seven hundred twenty-five".