25772534 has 4 divisors (see below), whose sum is σ = 38658804. Its totient is φ = 12886266.

The previous prime is 25772533. The next prime is 25772543. The reversal of 25772534 is 43527752.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25772494 and 25772503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25772533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443132 + ... + 6443135.

It is an arithmetic number, because the mean of its divisors is an integer number (9664701).

Almost surely, 2^25772534 is an apocalyptic number.

25772534 is a deficient number, since it is larger than the sum of its proper divisors (12886270).

25772534 is a wasteful number, since it uses less digits than its factorization.

25772534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12886269.

The product of its digits is 58800, while the sum is 35.

The square root of 25772534 is about 5076.6656379951. The cubic root of 25772534 is about 295.3831428789.

The spelling of 25772534 in words is "twenty-five million, seven hundred seventy-two thousand, five hundred thirty-four".