61404025 has 12 divisors (see below), whose sum is σ = 78598144. Its totient is φ = 47538000.

The previous prime is 61404011. The next prime is 61404047. The reversal of 61404025 is 52040416.

It is not a de Polignac number, because 61404025 - 2¹³ = 61395833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61403987 and 61404005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38841 + ... + 40390.

Almost surely, 2^61404025 is an apocalyptic number.

It is an amenable number.

61404025 is a deficient number, since it is larger than the sum of its proper divisors (17194119).

61404025 is a wasteful number, since it uses less digits than its factorization.

61404025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79272 (or 79267 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 61404025 is about 7836.0720389746. The cubic root of 61404025 is about 394.5169012492.

The spelling of 61404025 in words is "sixty-one million, four hundred four thousand, twenty-five".