625465261205541 has 6 divisors (see below), whose sum is σ = 903449821741350. Its totient is φ = 416976840803688.

The previous prime is 625465261205539. The next prime is 625465261205549. The reversal of 625465261205541 is 145502162564526.

625465261205541 is a `hidden beast` number, since 6 + 2 + 5 + 4 + 6 + 5 + 2 + 61 + 20 + 554 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 596888175377025 + 28577085828516 = 24431295^2 + 5345754^2 .

It is not a de Polignac number, because 625465261205541 - 2¹ = 625465261205539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625465261205549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34748070066966 + ... + 34748070066983.

It is an arithmetic number, because the mean of its divisors is an integer number (150574970290225).

Almost surely, 2^{625465261205541} is an apocalyptic number.

It is an amenable number.

625465261205541 is a deficient number, since it is larger than the sum of its proper divisors (277984560535809).

625465261205541 is a wasteful number, since it uses less digits than its factorization.

625465261205541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69496140133955 (or 69496140133952 counting only the distinct ones).

The product of its (nonzero) digits is 17280000, while the sum is 54.

The spelling of 625465261205541 in words is "six hundred twenty-five trillion, four hundred sixty-five billion, two hundred sixty-one million, two hundred five thousand, five hundred forty-one".