61928560225 has 48 divisors (see below), whose sum is σ = 90092920192. Its totient is φ = 41343644160.

The previous prime is 61928560201. The next prime is 61928560259. The reversal of 61928560225 is 52206582916.

It is a happy number.

It is not a de Polignac number, because 61928560225 - 2¹³ = 61928552033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2342179 + ... + 2368471.

Almost surely, 2^61928560225 is an apocalyptic number.

It is an amenable number.

61928560225 is a deficient number, since it is larger than the sum of its proper divisors (28164359967).

61928560225 is a wasteful number, since it uses less digits than its factorization.

61928560225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26666 (or 26661 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 61928560225 in words is "sixty-one billion, nine hundred twenty-eight million, five hundred sixty thousand, two hundred twenty-five".