10215725990 has 16 divisors (see below), whose sum is σ = 18400039920. Its totient is φ = 4083683040.

The previous prime is 10215725939. The next prime is 10215726043. The reversal of 10215725990 is 9952751201.

It is a super-2 number, since 2×10215725990² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 309425 + ... + 340844.

It is an arithmetic number, because the mean of its divisors is an integer number (1150002495).

Almost surely, 2^10215725990 is an apocalyptic number.

10215725990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10215725990 is a deficient number, since it is larger than the sum of its proper divisors (8184313930).

10215725990 is a wasteful number, since it uses less digits than its factorization.

10215725990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651847.

The product of its (nonzero) digits is 56700, while the sum is 41.

The spelling of 10215725990 in words is "ten billion, two hundred fifteen million, seven hundred twenty-five thousand, nine hundred ninety".