61251224025 has 12 divisors (see below), whose sum is σ = 101268690512. Its totient is φ = 32667319440.

The previous prime is 61251223997. The next prime is 61251224029. The reversal of 61251224025 is 52042215216.

61251224025 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 61251224025 - 2⁵ = 61251223993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61251223983 and 61251224001.

It is not an unprimeable number, because it can be changed into a prime (61251224029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408341419 + ... + 408341568.

Almost surely, 2^61251224025 is an apocalyptic number.

It is an amenable number.

61251224025 is a deficient number, since it is larger than the sum of its proper divisors (40017466487).

61251224025 is a wasteful number, since it uses less digits than its factorization.

61251224025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816683000 (or 816682995 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 61251224025 in words is "sixty-one billion, two hundred fifty-one million, two hundred twenty-four thousand, twenty-five".