25470431 has 8 divisors (see below), whose sum is σ = 30641280. Its totient is φ = 20682648.

The previous prime is 25470409. The next prime is 25470433. The reversal of 25470431 is 13407452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25470431 is a prime.

It is a super-3 number, since 3×25470431³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25470431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25470433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95621 + ... + 95886.

It is an arithmetic number, because the mean of its divisors is an integer number (3830160).

Almost surely, 2^25470431 is an apocalyptic number.

25470431 is a deficient number, since it is larger than the sum of its proper divisors (5170849).

25470431 is a wasteful number, since it uses less digits than its factorization.

25470431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191533.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 25470431 is about 5046.8238526820. The cubic root of 25470431 is about 294.2244533687.

Adding to 25470431 its reverse (13407452), we get a palindrome (38877883).

The spelling of 25470431 in words is "twenty-five million, four hundred seventy thousand, four hundred thirty-one".