25772429 has 4 divisors (see below), whose sum is σ = 25875360. Its totient is φ = 25669500.

The previous prime is 25772423. The next prime is 25772533. The reversal of 25772429 is 92427752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25772429 - 2¹² = 25768333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25772392 and 25772401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25772423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51089 + ... + 51590.

It is an arithmetic number, because the mean of its divisors is an integer number (6468840).

Almost surely, 2^25772429 is an apocalyptic number.

It is an amenable number.

25772429 is a deficient number, since it is larger than the sum of its proper divisors (102931).

25772429 is a wasteful number, since it uses less digits than its factorization.

25772429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102930.

The product of its digits is 70560, while the sum is 38.

The square root of 25772429 is about 5076.6552965511. The cubic root of 25772429 is about 295.3827417378.

The spelling of 25772429 in words is "twenty-five million, seven hundred seventy-two thousand, four hundred twenty-nine".