25425152402504 has 8 divisors (see below), whose sum is σ = 47672160754710. Its totient is φ = 12712576201248.

The previous prime is 25425152402491. The next prime is 25425152402509. The reversal of 25425152402504 is 40520425152452.

It can be written as a sum of positive squares in only one way, i.e., 25166175228100 + 258977174404 = 5016590^2 + 508898^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (25425152402509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1589072025149 + ... + 1589072025164.

Almost surely, 2^{25425152402504} is an apocalyptic number.

It is an amenable number.

25425152402504 is a deficient number, since it is larger than the sum of its proper divisors (22247008352206).

25425152402504 is a wasteful number, since it uses less digits than its factorization.

25425152402504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178144050319 (or 3178144050315 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 41.

Adding to 25425152402504 its reverse (40520425152452), we get a palindrome (65945577554956).

The spelling of 25425152402504 in words is "twenty-five trillion, four hundred twenty-five billion, one hundred fifty-two million, four hundred two thousand, five hundred four".