25243211011431 has 64 divisors (see below), whose sum is σ = 39824624517120. Its totient is φ = 13917962177280.

The previous prime is 25243211011429. The next prime is 25243211011471. The reversal of 25243211011431 is 13411011234252.

It is not a de Polignac number, because 25243211011431 - 2¹ = 25243211011429 is a prime.

It is a super-2 number, since 2×25243211011431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25243211011471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 388809190 + ... + 388874108.

It is an arithmetic number, because the mean of its divisors is an integer number (622259758080).

Almost surely, 2^{25243211011431} is an apocalyptic number.

25243211011431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25243211011431 is a deficient number, since it is larger than the sum of its proper divisors (14581413505689).

25243211011431 is a wasteful number, since it uses less digits than its factorization.

25243211011431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66724.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 25243211011431 its reverse (13411011234252), we get a palindrome (38654222245683).

The spelling of 25243211011431 in words is "twenty-five trillion, two hundred forty-three billion, two hundred eleven million, eleven thousand, four hundred thirty-one".