25740030969 has 9 divisors (see below), whose sum is σ = 37180739973. Its totient is φ = 17159699772.

The previous prime is 25740030961. The next prime is 25740030977. The reversal of 25740030969 is 96903004752.

It is a happy number.

The square root of 25740030969 is 160437.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (25740030961) and next prime (25740030977).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 25740030969 - 2³ = 25740030961 is a prime.

It is a super-2 number, since 2×25740030969² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25740030961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 454572 + ... + 508050.

Almost surely, 2^25740030969 is an apocalyptic number.

25740030969 is the 160437-th square number.

25740030969 is the 80219-th centered octagonal number.

It is an amenable number.

25740030969 is a deficient number, since it is larger than the sum of its proper divisors (11440709004).

25740030969 is an frugal number, since it uses more digits than its factorization.

25740030969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106964 (or 53482 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

It can be divided in two parts, 257400 and 30969, that added together give a square (288369 = 537²).

The spelling of 25740030969 in words is "twenty-five billion, seven hundred forty million, thirty thousand, nine hundred sixty-nine".