61885289725 has 24 divisors (see below), whose sum is σ = 87715348160. Its totient is φ = 42428344320.

The previous prime is 61885289657. The next prime is 61885289731. The reversal of 61885289725 is 52798258816.

It is not a de Polignac number, because 61885289725 - 2⁷ = 61885289597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1115494 + ... + 1169656.

Almost surely, 2^61885289725 is an apocalyptic number.

It is an amenable number.

61885289725 is a deficient number, since it is larger than the sum of its proper divisors (25830058435).

61885289725 is a wasteful number, since it uses less digits than its factorization.

61885289725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60709 (or 60704 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 61.

The spelling of 61885289725 in words is "sixty-one billion, eight hundred eighty-five million, two hundred eighty-nine thousand, seven hundred twenty-five".