25219502493 has 16 divisors (see below), whose sum is σ = 34863048000. Its totient is φ = 16197063680.

The previous prime is 25219502479. The next prime is 25219502573. The reversal of 25219502493 is 39420591252.

It is a cyclic number.

It is not a de Polignac number, because 25219502493 - 2¹⁰ = 25219501469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25219502443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283743 + ... + 361868.

It is an arithmetic number, because the mean of its divisors is an integer number (2178940500).

Almost surely, 2^25219502493 is an apocalyptic number.

It is an amenable number.

25219502493 is a deficient number, since it is larger than the sum of its proper divisors (9643545507).

25219502493 is a wasteful number, since it uses less digits than its factorization.

25219502493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646092.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 25219502493 in words is "twenty-five billion, two hundred nineteen million, five hundred two thousand, four hundred ninety-three".