42015606625 has 16 divisors (see below), whose sum is σ = 52523993808. Its totient is φ = 33555744000.

The previous prime is 42015606601. The next prime is 42015606631. The reversal of 42015606625 is 52660651024.

It can be written as a sum of positive squares in 8 ways, for example, as 23989053456 + 18026553169 = 154884^2 + 134263^2 .

It is not a de Polignac number, because 42015606625 - 2⁷ = 42015606497 is a prime.

It is a super-2 number, since 2×42015606625² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209286 + ... + 357535.

It is an arithmetic number, because the mean of its divisors is an integer number (3282749613).

Almost surely, 2^42015606625 is an apocalyptic number.

It is an amenable number.

42015606625 is a deficient number, since it is larger than the sum of its proper divisors (10508387183).

42015606625 is an equidigital number, since it uses as much as digits as its factorization.

42015606625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567429 (or 567419 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 42015606625 in words is "forty-two billion, fifteen million, six hundred six thousand, six hundred twenty-five".