61322545025 has 24 divisors (see below), whose sum is σ = 87017793600. Its totient is φ = 41994106560.

The previous prime is 61322545021. The next prime is 61322545069. The reversal of 61322545025 is 52054522316.

61322545025 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 61322545025 - 2² = 61322545021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (61322545021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98975 + ... + 363924.

It is an arithmetic number, because the mean of its divisors is an integer number (3625741400).

Almost surely, 2^61322545025 is an apocalyptic number.

It is an amenable number.

61322545025 is a deficient number, since it is larger than the sum of its proper divisors (25695248575).

61322545025 is a wasteful number, since it uses less digits than its factorization.

61322545025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463673 (or 463668 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 61322545025 in words is "sixty-one billion, three hundred twenty-two million, five hundred forty-five thousand, twenty-five".