61395415425 has 48 divisors (see below), whose sum is σ = 119420124480. Its totient is φ = 30818085120.

The previous prime is 61395415409. The next prime is 61395415427. The reversal of 61395415425 is 52451459316.

It is a happy number.

61395415425 is a `hidden beast` number, since 6 + 1 + 39 + 541 + 54 + 25 = 666.

61395415425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61395415425 - 2⁴ = 61395415409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (61395415427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2663707 + ... + 2686656.

It is an arithmetic number, because the mean of its divisors is an integer number (2487919260).

Almost surely, 2^61395415425 is an apocalyptic number.

It is an amenable number.

61395415425 is a deficient number, since it is larger than the sum of its proper divisors (58024709055).

61395415425 is a wasteful number, since it uses less digits than its factorization.

61395415425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5350399 (or 5350388 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 61395415425 in words is "sixty-one billion, three hundred ninety-five million, four hundred fifteen thousand, four hundred twenty-five".