25142771425 has 36 divisors (see below), whose sum is σ = 32716923840. Its totient is φ = 19131119040.

The previous prime is 25142771377. The next prime is 25142771429. The reversal of 25142771425 is 52417724152.

It is not a de Polignac number, because 25142771425 - 2²⁷ = 25008553697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25142771429) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70035396 + ... + 70035754.

It is an arithmetic number, because the mean of its divisors is an integer number (908803440).

Almost surely, 2^25142771425 is an apocalyptic number.

25142771425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25142771425 is a deficient number, since it is larger than the sum of its proper divisors (7574152415).

25142771425 is an equidigital number, since it uses as much as digits as its factorization.

25142771425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 736 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The spelling of 25142771425 in words is "twenty-five billion, one hundred forty-two million, seven hundred seventy-one thousand, four hundred twenty-five".