25261161425 has 12 divisors (see below), whose sum is σ = 32334287616. Its totient is φ = 19557027600.

The previous prime is 25261161403. The next prime is 25261161427. The reversal of 25261161425 is 52416116252.

It is not a de Polignac number, because 25261161425 - 2³⁰ = 24187419601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25261161427) 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, 16296749 + ... + 16298298.

It is an arithmetic number, because the mean of its divisors is an integer number (2694523968).

Almost surely, 2^25261161425 is an apocalyptic number.

25261161425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25261161425 is a deficient number, since it is larger than the sum of its proper divisors (7073126191).

25261161425 is a wasteful number, since it uses less digits than its factorization.

25261161425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32595088 (or 32595083 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

Adding to 25261161425 its reverse (52416116252), we get a palindrome (77677277677).

The spelling of 25261161425 in words is "twenty-five billion, two hundred sixty-one million, one hundred sixty-one thousand, four hundred twenty-five".