61242553425 has 24 divisors (see below), whose sum is σ = 102680481600. Its totient is φ = 32202654400.

The previous prime is 61242553417. The next prime is 61242553433. The reversal of 61242553425 is 52435524216.

It is an interprime number because it is at equal distance from previous prime (61242553417) and next prime (61242553433).

It is not a de Polignac number, because 61242553425 - 2³ = 61242553417 is a prime.

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, 5745150 + ... + 5755799.

It is an arithmetic number, because the mean of its divisors is an integer number (4278353400).

Almost surely, 2^61242553425 is an apocalyptic number.

It is an amenable number.

61242553425 is a deficient number, since it is larger than the sum of its proper divisors (41437928175).

61242553425 is a wasteful number, since it uses less digits than its factorization.

61242553425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11501033 (or 11501028 counting only the distinct ones).

The product of its digits is 288000, while the sum is 39.

The spelling of 61242553425 in words is "sixty-one billion, two hundred forty-two million, five hundred fifty-three thousand, four hundred twenty-five".