61974372725 has 24 divisors (see below), whose sum is σ = 78620170368. Its totient is φ = 48439987200.

The previous prime is 61974372709. The next prime is 61974372737. The reversal of 61974372725 is 52727347916.

It is not a de Polignac number, because 61974372725 - 2⁴ = 61974372709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 632270 + ... + 723680.

It is an arithmetic number, because the mean of its divisors is an integer number (3275840432).

Almost surely, 2^61974372725 is an apocalyptic number.

It is an amenable number.

61974372725 is a deficient number, since it is larger than the sum of its proper divisors (16645797643).

61974372725 is a wasteful number, since it uses less digits than its factorization.

61974372725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92045 (or 92040 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 53.

The spelling of 61974372725 in words is "sixty-one billion, nine hundred seventy-four million, three hundred seventy-two thousand, seven hundred twenty-five".