25493045492542 has 24 divisors (see below), whose sum is σ = 40622240049120. Its totient is φ = 11996441233920.

The previous prime is 25493045492533. The next prime is 25493045492623. The reversal of 25493045492542 is 24529454039452.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24788742 + ... + 25796662.

It is an arithmetic number, because the mean of its divisors is an integer number (1692593335380).

Almost surely, 2^{25493045492542} is an apocalyptic number.

25493045492542 is a deficient number, since it is larger than the sum of its proper divisors (15129194556578).

25493045492542 is a wasteful number, since it uses less digits than its factorization.

25493045492542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051716 (or 1051699 counting only the distinct ones).

The product of its (nonzero) digits is 62208000, while the sum is 58.

The spelling of 25493045492542 in words is "twenty-five trillion, four hundred ninety-three billion, forty-five million, four hundred ninety-two thousand, five hundred forty-two".