25505534 has 4 divisors (see below), whose sum is σ = 38258304. Its totient is φ = 12752766.

The previous prime is 25505509. The next prime is 25505539. The reversal of 25505534 is 43550552.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 25505497 and 25505506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6376382 + ... + 6376385.

It is an arithmetic number, because the mean of its divisors is an integer number (9564576).

Almost surely, 2^25505534 is an apocalyptic number.

25505534 is a deficient number, since it is larger than the sum of its proper divisors (12752770).

25505534 is a wasteful number, since it uses less digits than its factorization.

25505534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12752769.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 25505534 is about 5050.3003871057. The cubic root of 25505534 is about 294.3595566957.

The spelling of 25505534 in words is "twenty-five million, five hundred five thousand, five hundred thirty-four".