252154621402 has 16 divisors (see below), whose sum is σ = 378634962024. Its totient is φ = 125943040000.

The previous prime is 252154621373. The next prime is 252154621483. The reversal of 252154621402 is 204126451252.

It can be written as a sum of positive squares in 4 ways, for example, as 194587736641 + 57566884761 = 441121^2 + 239931^2 .

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, 7799952 + ... + 7832212.

Almost surely, 2^252154621402 is an apocalyptic number.

252154621402 is a deficient number, since it is larger than the sum of its proper divisors (126480340622).

252154621402 is a wasteful number, since it uses less digits than its factorization.

252154621402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36305.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 252154621402 in words is "two hundred fifty-two billion, one hundred fifty-four million, six hundred twenty-one thousand, four hundred two".