25472581493 has 16 divisors (see below), whose sum is σ = 26148372480. Its totient is φ = 24802727856.

The previous prime is 25472581481. The next prime is 25472581507. The reversal of 25472581493 is 39418527452.

It is a cyclic number.

It is not a de Polignac number, because 25472581493 - 2⁶ = 25472581429 is a prime.

It is a super-2 number, since 2×25472581493² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25472581403) 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, 8260730 + ... + 8263812.

It is an arithmetic number, because the mean of its divisors is an integer number (1634273280).

Almost surely, 2^25472581493 is an apocalyptic number.

It is an amenable number.

25472581493 is a deficient number, since it is larger than the sum of its proper divisors (675790987).

25472581493 is a wasteful number, since it uses less digits than its factorization.

25472581493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976.

The product of its digits is 2419200, while the sum is 50.

The spelling of 25472581493 in words is "twenty-five billion, four hundred seventy-two million, five hundred eighty-one thousand, four hundred ninety-three".