40155415125 has 32 divisors (see below), whose sum is σ = 76364131584. Its totient is φ = 18356760000.

The previous prime is 40155415121. The next prime is 40155415133. The reversal of 40155415125 is 52151455104.

It is a happy number.

It is not a de Polignac number, because 40155415125 - 2² = 40155415121 is a prime.

It is a super-2 number, since 2×40155415125² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155415121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7646026 + ... + 7651275.

It is an arithmetic number, because the mean of its divisors is an integer number (2386379112).

Almost surely, 2^40155415125 is an apocalyptic number.

It is an amenable number.

40155415125 is a deficient number, since it is larger than the sum of its proper divisors (36208716459).

40155415125 is a wasteful number, since it uses less digits than its factorization.

40155415125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15297326 (or 15297316 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 40155415125 in words is "forty billion, one hundred fifty-five million, four hundred fifteen thousand, one hundred twenty-five".