25023340432534 has 4 divisors (see below), whose sum is σ = 37535010648804. Its totient is φ = 12511670216266.

The previous prime is 25023340432471. The next prime is 25023340432543. The reversal of 25023340432534 is 43523404332052.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×25023340432534² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6255835108132 + ... + 6255835108135.

It is an arithmetic number, because the mean of its divisors is an integer number (9383752662201).

Almost surely, 2^{25023340432534} is an apocalyptic number.

25023340432534 is a deficient number, since it is larger than the sum of its proper divisors (12511670216270).

25023340432534 is a wasteful number, since it uses less digits than its factorization.

25023340432534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12511670216269.

The product of its (nonzero) digits is 1036800, while the sum is 40.

Adding to 25023340432534 its reverse (43523404332052), we get a palindrome (68546744764586).

The spelling of 25023340432534 in words is "twenty-five trillion, twenty-three billion, three hundred forty million, four hundred thirty-two thousand, five hundred thirty-four".