25122403461 has 4 divisors (see below), whose sum is σ = 33496537952. Its totient is φ = 16748268972.

The previous prime is 25122403457. The next prime is 25122403469. The reversal of 25122403461 is 16430422152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25122403461 - 2² = 25122403457 is a prime.

It is a super-2 number, since 2×25122403461² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25122403469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4187067241 + ... + 4187067246.

It is an arithmetic number, because the mean of its divisors is an integer number (8374134488).

Almost surely, 2^25122403461 is an apocalyptic number.

It is an amenable number.

25122403461 is a deficient number, since it is larger than the sum of its proper divisors (8374134491).

25122403461 is an equidigital number, since it uses as much as digits as its factorization.

25122403461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8374134490.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 25122403461 in words is "twenty-five billion, one hundred twenty-two million, four hundred three thousand, four hundred sixty-one".