61401525 has 12 divisors (see below), whose sum is σ = 101517312. Its totient is φ = 32747440.

The previous prime is 61401511. The next prime is 61401533. The reversal of 61401525 is 52510416.

It is not a de Polignac number, because 61401525 - 2⁷ = 61401397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61401495 and 61401504.

It is a congruent number.

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, 409269 + ... + 409418.

It is an arithmetic number, because the mean of its divisors is an integer number (8459776).

Almost surely, 2^61401525 is an apocalyptic number.

It is an amenable number.

61401525 is a deficient number, since it is larger than the sum of its proper divisors (40115787).

61401525 is a wasteful number, since it uses less digits than its factorization.

61401525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818700 (or 818695 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 61401525 is about 7835.9125186541. The cubic root of 61401525 is about 394.5115470636.

The spelling of 61401525 in words is "sixty-one million, four hundred one thousand, five hundred twenty-five".