38720801556525 has 48 divisors (see below), whose sum is σ = 69839842963968. Its totient is φ = 18773292600000.

The previous prime is 38720801556499. The next prime is 38720801556557. The reversal of 38720801556525 is 52565510802783.

It is a happy number.

It is not a de Polignac number, because 38720801556525 - 2⁷ = 38720801556397 is a prime.

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, 37161400 + ... + 38189150.

It is an arithmetic number, because the mean of its divisors is an integer number (1454996728416).

Almost surely, 2^{38720801556525} is an apocalyptic number.

It is an amenable number.

38720801556525 is a deficient number, since it is larger than the sum of its proper divisors (31119041407443).

38720801556525 is a wasteful number, since it uses less digits than its factorization.

38720801556525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073442 (or 1073437 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 57.

The spelling of 38720801556525 in words is "thirty-eight trillion, seven hundred twenty billion, eight hundred one million, five hundred fifty-six thousand, five hundred twenty-five".