20250202513 has 4 divisors (see below), whose sum is σ = 20582173108. Its totient is φ = 19918231920.

The previous prime is 20250202493. The next prime is 20250202519. The reversal of 20250202513 is 31520205202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5401074064 + 14849128449 = 73492^2 + 121857^2 .

It is a cyclic number.

It is not a de Polignac number, because 20250202513 - 2⁵ = 20250202481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20250202519) 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, 165985206 + ... + 165985327.

It is an arithmetic number, because the mean of its divisors is an integer number (5145543277).

Almost surely, 2^20250202513 is an apocalyptic number.

It is an amenable number.

20250202513 is a deficient number, since it is larger than the sum of its proper divisors (331970595).

20250202513 is an equidigital number, since it uses as much as digits as its factorization.

20250202513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331970594.

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20250202513 its reverse (31520205202), we get a palindrome (51770407715).

The spelling of 20250202513 in words is "twenty billion, two hundred fifty million, two hundred two thousand, five hundred thirteen".