25434122511 has 16 divisors (see below), whose sum is σ = 38796703488. Its totient is φ = 14518804800.

The previous prime is 25434122509. The next prime is 25434122533. The reversal of 25434122511 is 11522143452.

It is not a de Polignac number, because 25434122511 - 2¹ = 25434122509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25434122111) 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, 603270 + ... + 644051.

It is an arithmetic number, because the mean of its divisors is an integer number (2424793968).

Almost surely, 2^25434122511 is an apocalyptic number.

25434122511 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25434122511 is a deficient number, since it is larger than the sum of its proper divisors (13362580977).

25434122511 is a wasteful number, since it uses less digits than its factorization.

25434122511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248302.

The product of its digits is 9600, while the sum is 30.

Adding to 25434122511 its reverse (11522143452), we get a palindrome (36956265963).

The spelling of 25434122511 in words is "twenty-five billion, four hundred thirty-four million, one hundred twenty-two thousand, five hundred eleven".