25434013431516 has 48 divisors (see below), whose sum is σ = 62837369519904. Its totient is φ = 7979248152576.

The previous prime is 25434013431461. The next prime is 25434013431527. The reversal of 25434013431516 is 61513431043452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44948286 + ... + 45510618.

It is an arithmetic number, because the mean of its divisors is an integer number (1309111864998).

Almost surely, 2^{25434013431516} is an apocalyptic number.

It is an amenable number.

25434013431516 is an abundant number, since it is smaller than the sum of its proper divisors (37403356088388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25434013431516 is a wasteful number, since it uses less digits than its factorization.

25434013431516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784070 (or 784068 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 25434013431516 its reverse (61513431043452), we get a palindrome (86947444474968).

The spelling of 25434013431516 in words is "twenty-five trillion, four hundred thirty-four billion, thirteen million, four hundred thirty-one thousand, five hundred sixteen".