2251400652266 has 4 divisors (see below), whose sum is σ = 3377100978402. Its totient is φ = 1125700326132.

The previous prime is 2251400652253. The next prime is 2251400652289. The reversal of 2251400652266 is 6622560041522.

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., 2231053056241 + 20347596025 = 1493671^2 + 142645^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562850163065 + ... + 562850163068.

Almost surely, 2^{2251400652266} is an apocalyptic number.

2251400652266 is a deficient number, since it is larger than the sum of its proper divisors (1125700326136).

2251400652266 is a wasteful number, since it uses less digits than its factorization.

2251400652266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125700326135.

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 2251400652266 its reverse (6622560041522), we get a palindrome (8873960693788).

The spelling of 2251400652266 in words is "two trillion, two hundred fifty-one billion, four hundred million, six hundred fifty-two thousand, two hundred sixty-six".