2505400352525 has 24 divisors (see below), whose sum is σ = 3759363760320. Its totient is φ = 1616930645760.

The previous prime is 2505400352473. The next prime is 2505400352549. The reversal of 2505400352525 is 5252530045052.

It is not a de Polignac number, because 2505400352525 - 2⁸ = 2505400352269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421072715 + ... + 421078664.

It is an arithmetic number, because the mean of its divisors is an integer number (156640156680).

Almost surely, 2^{2505400352525} is an apocalyptic number.

2505400352525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2505400352525 is a deficient number, since it is larger than the sum of its proper divisors (1253963407795).

2505400352525 is a wasteful number, since it uses less digits than its factorization.

2505400352525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842151413 (or 842151408 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 38.

Adding to 2505400352525 its reverse (5252530045052), we get a palindrome (7757930397577).

The spelling of 2505400352525 in words is "two trillion, five hundred five billion, four hundred million, three hundred fifty-two thousand, five hundred twenty-five".