212507625990 has 32 divisors (see below), whose sum is σ = 556383603456. Its totient is φ = 51517000160.

The previous prime is 212507625973. The next prime is 212507626063. The reversal of 212507625990 is 99526705212.

It is a happy number.

It is a super-2 number, since 2×212507625990² (a number of 23 digits) contains 22 as substring.

It is a congruent 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, 321980922 + ... + 321981581.

It is an arithmetic number, because the mean of its divisors is an integer number (17386987608).

Almost surely, 2^212507625990 is an apocalyptic number.

212507625990 is an abundant number, since it is smaller than the sum of its proper divisors (343875977466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212507625990 is a wasteful number, since it uses less digits than its factorization.

212507625990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643962524.

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 212507625990 in words is "two hundred twelve billion, five hundred seven million, six hundred twenty-five thousand, nine hundred ninety".