25463431 has 16 divisors (see below), whose sum is σ = 30220288. Its totient is φ = 20995200.

The previous prime is 25463429. The next prime is 25463441. The reversal of 25463431 is 13436452.

It is a 7-Lehmer number, since φ(25463431) divides (25463431-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 25463431 - 2¹ = 25463429 is a prime.

It is a super-2 number, since 2×25463431² = 1296772636583522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25463431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25463411) 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, 58591 + ... + 59023.

It is an arithmetic number, because the mean of its divisors is an integer number (1888768).

Almost surely, 2^25463431 is an apocalyptic number.

25463431 is a deficient number, since it is larger than the sum of its proper divisors (4756857).

25463431 is a wasteful number, since it uses less digits than its factorization.

25463431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its digits is 8640, while the sum is 28.

The square root of 25463431 is about 5046.1302995464. The cubic root of 25463431 is about 294.1974971454.

Adding to 25463431 its reverse (13436452), we get a palindrome (38899883).

The spelling of 25463431 in words is "twenty-five million, four hundred sixty-three thousand, four hundred thirty-one".