61744573025 has 6 divisors (see below), whose sum is σ = 76563270582. Its totient is φ = 49395658400.

The previous prime is 61744573021. The next prime is 61744573027. The reversal of 61744573025 is 52037544716.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 169624576 + 61574948449 = 13024^2 + 248143^2 .

It is not a de Polignac number, because 61744573025 - 2² = 61744573021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61744573021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1234891436 + ... + 1234891485.

It is an arithmetic number, because the mean of its divisors is an integer number (12760545097).

Almost surely, 2^61744573025 is an apocalyptic number.

It is an amenable number.

61744573025 is a deficient number, since it is larger than the sum of its proper divisors (14818697557).

61744573025 is a wasteful number, since it uses less digits than its factorization.

61744573025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469782931 (or 2469782926 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 61744573025 in words is "sixty-one billion, seven hundred forty-four million, five hundred seventy-three thousand, twenty-five".