2525709986 has 4 divisors (see below), whose sum is σ = 3788564982. Its totient is φ = 1262854992.

The previous prime is 2525709983. The next prime is 2525709997. The reversal of 2525709986 is 6899075252.

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

It can be written as a sum of positive squares in only one way, i.e., 2237763025 + 287946961 = 47305^2 + 16969^2 .

It is not an unprimeable number, because it can be changed into a prime (2525709983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631427495 + ... + 631427498.

Almost surely, 2^2525709986 is an apocalyptic number.

2525709986 is a deficient number, since it is larger than the sum of its proper divisors (1262854996).

2525709986 is a wasteful number, since it uses less digits than its factorization.

2525709986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262854995.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The square root of 2525709986 is about 50256.4422338072. The cubic root of 2525709986 is about 1361.8454592664.

The spelling of 2525709986 in words is "two billion, five hundred twenty-five million, seven hundred nine thousand, nine hundred eighty-six".