25251312025 has 12 divisors (see below), whose sum is σ = 31688878032. Its totient is φ = 19957661840.

The previous prime is 25251311977. The next prime is 25251312029. The reversal of 25251312025 is 52021315252.

It is a de Polignac number, because none of the positive numbers 2^k-25251312025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25251311984 and 25251312002.

It is not an unprimeable number, because it can be changed into a prime (25251312029) 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, 6082579 + ... + 6086728.

It is an arithmetic number, because the mean of its divisors is an integer number (2640739836).

Almost surely, 2^25251312025 is an apocalyptic number.

25251312025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25251312025 is a deficient number, since it is larger than the sum of its proper divisors (6437566007).

25251312025 is a wasteful number, since it uses less digits than its factorization.

25251312025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12169400 (or 12169395 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 25251312025 its reverse (52021315252), we get a palindrome (77272627277).

The spelling of 25251312025 in words is "twenty-five billion, two hundred fifty-one million, three hundred twelve thousand, twenty-five".