25434013431515 has 64 divisors (see below), whose sum is σ = 33151854016512. Its totient is φ = 18621021619200.

The previous prime is 25434013431461. The next prime is 25434013431527. The reversal of 25434013431515 is 51513431043452.

It is not a de Polignac number, because 25434013431515 - 2⁸ = 25434013431259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4549096370 + ... + 4549101960.

It is an arithmetic number, because the mean of its divisors is an integer number (517997719008).

Almost surely, 2^{25434013431515} is an apocalyptic number.

25434013431515 is a deficient number, since it is larger than the sum of its proper divisors (7717840584997).

25434013431515 is a wasteful number, since it uses less digits than its factorization.

25434013431515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100.

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 25434013431515 its reverse (51513431043452), we get a palindrome (76947444474967).

The spelling of 25434013431515 in words is "twenty-five trillion, four hundred thirty-four billion, thirteen million, four hundred thirty-one thousand, five hundred fifteen".